Suppository injector



May 19, 1925 J. S. BLINN SUPPOSITORY INJECTOR Filed Maj 8, 1923 INVENTOR@WHSLBLINN m .S S E m I W Patented May 19, 1925.

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Application filed May 8,

To all whom it may concern:

Be it known that I, JOSEPH S. BLINN, a citizen of the United States ofAmerica, and a resident of New Haven, in the county of New Haven andState of Connecticut, have invented a new 'and Improved SuppositoryInjector, of which the following is a description.

My invention relates to an injector or applicator for the insertion of asuppository in a cavity of the human body.

The present invention is intended more particularly as an iinproven'ienton the injector forming the subject matter of an application filed by meFebruary 24, 1923, Serial No. 620,996.

The object of the present invention is to prevent the resilient fingersformed on the injector body from gripping the membrane with theliability of the membrane being injured by the withdrawal of theinjector from the cavity.

teference is to be had to the accompanying drawing forming part of thisspecification, it being understood that the drawings are merelyillustrative of one example of the invention.

Figure 1 is a longitudinal sectional View of the body of the injector;

Figure 2 is a longitudinal sectional view of the body of the injectorand a side elevation of the plunger in the act of forcing out asuppository from said body;

Figure 3 is a side elevat on of the body and plunger when not in use, aportion of the body being broken out;

Figure 4 is a front end View of the body;

Figure 5 is a side elevation of the body with a cap thereon to preventthe resilient lingers from losing their resiliency, said cap being shownpartially'broken away and in section.

In carrying out my invention in accordance with the illustrated examplea tubular injector body is provided, having a flared rear end 11. Thefront end of the body is formed with longitudinal slits 12, therebyproducing a plurality of resilient fingers 13.

In association with the body 10 I employ a plunger l l having anenlarged rear end and a sufficiently enlarged head 16 at the front endto engage and displace the suppository A when the latter is inserted inthe body 10.

In use a suppository is inserted in the 192a Senial No. cans is.

tubular body 1 0 and said body inserted in the cavity where thesuppository is to be emplaced. The plunger 14 is now employed todisplace the suppository A and deposit the same in the cavity.

In order-to prevent the possibility of the membranes at the interior ofthe cavity from being caught or pinched between the lingers 13, the head16 is made of suflicient size so that when it is forced forwardly beyondthe front ends of the fingers 13, said head will effect a lockingengagement with the ends of the fingers to prevent withdrawal of theplunger. The plunger tapers in the rear of the head 16 and has such adiameter a short distance from the head 16 that the plunger willmaintain the fingers 13 in spread form. Thus, when the plunger is fullyinserted with its head 16 beyond the ends of the fingers 13 the shank ofthe plunger will prevent the lingers from assuming a closed position. Inthe fully inserted position of the plunger 14 its rear end 15 will lieflush with the flared rear end 11 of the body so that said rear end 15is not readily accessible for being grasped by the user, while theflared rear end 11 of the body affords convenient means for withdrawingthe injector. In this way the injector will be withdrawn bodily with theplunger in position and the fingers spread.

In order to prevent loss of resiliency in the fingers 13 when the deviceis not in use, I provide a cap 17 to fit over said fingers for holdingthem in closed position as shown in Figure 5 and thus under tensionwhich tends to prevent loss of resiliency in the fingers.

I would state in conclusion that while the illustrated exampleconstitutes a practical embodiment of my invention, I do not limitmyself strictly to the exact details herein illustrated, since,manifestly, the samecan be considerably varied without departure fromthe spirit of the invention asdelined in the appended claims.

Having thus described my invention, I claim:

1. As a new article of manufacture, an injector comprising a tubularbody having longitudinally disposed fingers at the front end, and aplunger adapted to be inserted in said body for forcing a suppositorythrough said body, said plunger having a shank of transverse dimensionsto cause engagement thereof with said fingers and hold the fingersspread when the plunger is in position in the body.

2. As a new article of manufacture, an injector comprising a tubularbody having longitudinally disposed fingers at the front end, and aplunger adapted to be inserted in said body for forcing a suppositorythrough said body, said plunger having a 10 shank of transversedimensions to cause engagement thereof with said fingers and hold thefingers spread when the plunger is in position in the body; said bodyhaving an enlarged rear end and the said plunger having an enlarged rearend adapted when the plunger is inserted in the body to liesubstantially flush with the said rear end of the body.

"JOSEPH SYLVESTER BLINN.

